1 // SPDX-License-Identifier: GPL-2.0
2 //
3 // Machine specific code for the Acer n30, Acer N35, Navman PiN 570,
4 // Yakumo AlphaX and Airis NC05 PDAs.
5 //
6 // Copyright (c) 2003-2005 Simtec Electronics
7 //	Ben Dooks <ben@simtec.co.uk>
8 //
9 // Copyright (c) 2005-2008 Christer Weinigel <christer@weinigel.se>
10 //
11 // There is a wiki with more information about the n30 port at
12 // https://handhelds.org/moin/moin.cgi/AcerN30Documentation .
13 
14 #include <linux/kernel.h>
15 #include <linux/types.h>
16 
17 #include <linux/gpio_keys.h>
18 #include <linux/init.h>
19 #include <linux/gpio.h>
20 #include <linux/gpio/machine.h>
21 #include <linux/input.h>
22 #include <linux/interrupt.h>
23 #include <linux/platform_device.h>
24 #include <linux/serial_core.h>
25 #include <linux/serial_s3c.h>
26 #include <linux/timer.h>
27 #include <linux/io.h>
28 #include <linux/mmc/host.h>
29 
30 #include "hardware-s3c24xx.h"
31 #include <asm/irq.h>
32 #include <asm/mach-types.h>
33 
34 #include <linux/platform_data/fb-s3c2410.h>
35 #include <linux/platform_data/leds-s3c24xx.h>
36 #include "regs-gpio.h"
37 #include "gpio-samsung.h"
38 #include "gpio-cfg.h"
39 
40 #include <asm/mach/arch.h>
41 #include <asm/mach/irq.h>
42 #include <asm/mach/map.h>
43 
44 #include <linux/platform_data/i2c-s3c2410.h>
45 
46 #include "cpu.h"
47 #include "devs.h"
48 #include <linux/platform_data/mmc-s3cmci.h>
49 #include <linux/platform_data/usb-s3c2410_udc.h>
50 
51 #include "s3c24xx.h"
52 
53 static struct map_desc n30_iodesc[] __initdata = {
54 	/* nothing here yet */
55 };
56 
57 static struct s3c2410_uartcfg n30_uartcfgs[] = {
58 	/* Normal serial port */
59 	[0] = {
60 		.hwport	     = 0,
61 		.flags	     = 0,
62 		.ucon	     = 0x2c5,
63 		.ulcon	     = 0x03,
64 		.ufcon	     = 0x51,
65 	},
66 	/* IR port */
67 	[1] = {
68 		.hwport	     = 1,
69 		.flags	     = 0,
70 		.uart_flags  = UPF_CONS_FLOW,
71 		.ucon	     = 0x2c5,
72 		.ulcon	     = 0x43,
73 		.ufcon	     = 0x51,
74 	},
75 	/* On the N30 the bluetooth controller is connected here.
76 	 * On the N35 and variants the GPS receiver is connected here. */
77 	[2] = {
78 		.hwport	     = 2,
79 		.flags	     = 0,
80 		.ucon	     = 0x2c5,
81 		.ulcon	     = 0x03,
82 		.ufcon	     = 0x51,
83 	},
84 };
85 
86 static struct s3c2410_udc_mach_info n30_udc_cfg __initdata = {
87 	.vbus_pin		= S3C2410_GPG(1),
88 	.vbus_pin_inverted	= 0,
89 	.pullup_pin		= S3C2410_GPB(3),
90 };
91 
92 static struct gpio_keys_button n30_buttons[] = {
93 	{
94 		.gpio		= S3C2410_GPF(0),
95 		.code		= KEY_POWER,
96 		.desc		= "Power",
97 		.active_low	= 0,
98 	},
99 	{
100 		.gpio		= S3C2410_GPG(9),
101 		.code		= KEY_UP,
102 		.desc		= "Thumbwheel Up",
103 		.active_low	= 0,
104 	},
105 	{
106 		.gpio		= S3C2410_GPG(8),
107 		.code		= KEY_DOWN,
108 		.desc		= "Thumbwheel Down",
109 		.active_low	= 0,
110 	},
111 	{
112 		.gpio		= S3C2410_GPG(7),
113 		.code		= KEY_ENTER,
114 		.desc		= "Thumbwheel Press",
115 		.active_low	= 0,
116 	},
117 	{
118 		.gpio		= S3C2410_GPF(7),
119 		.code		= KEY_HOMEPAGE,
120 		.desc		= "Home",
121 		.active_low	= 0,
122 	},
123 	{
124 		.gpio		= S3C2410_GPF(6),
125 		.code		= KEY_CALENDAR,
126 		.desc		= "Calendar",
127 		.active_low	= 0,
128 	},
129 	{
130 		.gpio		= S3C2410_GPF(5),
131 		.code		= KEY_ADDRESSBOOK,
132 		.desc		= "Contacts",
133 		.active_low	= 0,
134 	},
135 	{
136 		.gpio		= S3C2410_GPF(4),
137 		.code		= KEY_MAIL,
138 		.desc		= "Mail",
139 		.active_low	= 0,
140 	},
141 };
142 
143 static struct gpio_keys_platform_data n30_button_data = {
144 	.buttons	= n30_buttons,
145 	.nbuttons	= ARRAY_SIZE(n30_buttons),
146 };
147 
148 static struct platform_device n30_button_device = {
149 	.name		= "gpio-keys",
150 	.id		= -1,
151 	.dev		= {
152 		.platform_data	= &n30_button_data,
153 	}
154 };
155 
156 static struct gpio_keys_button n35_buttons[] = {
157 	{
158 		.gpio		= S3C2410_GPF(0),
159 		.code		= KEY_POWER,
160 		.type		= EV_PWR,
161 		.desc		= "Power",
162 		.active_low	= 0,
163 		.wakeup		= 1,
164 	},
165 	{
166 		.gpio		= S3C2410_GPG(9),
167 		.code		= KEY_UP,
168 		.desc		= "Joystick Up",
169 		.active_low	= 0,
170 	},
171 	{
172 		.gpio		= S3C2410_GPG(8),
173 		.code		= KEY_DOWN,
174 		.desc		= "Joystick Down",
175 		.active_low	= 0,
176 	},
177 	{
178 		.gpio		= S3C2410_GPG(6),
179 		.code		= KEY_DOWN,
180 		.desc		= "Joystick Left",
181 		.active_low	= 0,
182 	},
183 	{
184 		.gpio		= S3C2410_GPG(5),
185 		.code		= KEY_DOWN,
186 		.desc		= "Joystick Right",
187 		.active_low	= 0,
188 	},
189 	{
190 		.gpio		= S3C2410_GPG(7),
191 		.code		= KEY_ENTER,
192 		.desc		= "Joystick Press",
193 		.active_low	= 0,
194 	},
195 	{
196 		.gpio		= S3C2410_GPF(7),
197 		.code		= KEY_HOMEPAGE,
198 		.desc		= "Home",
199 		.active_low	= 0,
200 	},
201 	{
202 		.gpio		= S3C2410_GPF(6),
203 		.code		= KEY_CALENDAR,
204 		.desc		= "Calendar",
205 		.active_low	= 0,
206 	},
207 	{
208 		.gpio		= S3C2410_GPF(5),
209 		.code		= KEY_ADDRESSBOOK,
210 		.desc		= "Contacts",
211 		.active_low	= 0,
212 	},
213 	{
214 		.gpio		= S3C2410_GPF(4),
215 		.code		= KEY_MAIL,
216 		.desc		= "Mail",
217 		.active_low	= 0,
218 	},
219 	{
220 		.gpio		= S3C2410_GPF(3),
221 		.code		= SW_RADIO,
222 		.desc		= "GPS Antenna",
223 		.active_low	= 0,
224 	},
225 	{
226 		.gpio		= S3C2410_GPG(2),
227 		.code		= SW_HEADPHONE_INSERT,
228 		.desc		= "Headphone",
229 		.active_low	= 0,
230 	},
231 };
232 
233 static struct gpio_keys_platform_data n35_button_data = {
234 	.buttons	= n35_buttons,
235 	.nbuttons	= ARRAY_SIZE(n35_buttons),
236 };
237 
238 static struct platform_device n35_button_device = {
239 	.name		= "gpio-keys",
240 	.id		= -1,
241 	.num_resources	= 0,
242 	.dev		= {
243 		.platform_data	= &n35_button_data,
244 	}
245 };
246 
247 /* This is the bluetooth LED on the device. */
248 
249 static struct gpiod_lookup_table n30_blue_led_gpio_table = {
250 	.dev_id = "s3c24xx_led.1",
251 	.table = {
252 		GPIO_LOOKUP("GPG", 6, NULL, GPIO_ACTIVE_HIGH),
253 		{ },
254 	},
255 };
256 
257 static struct s3c24xx_led_platdata n30_blue_led_pdata = {
258 	.name		= "blue_led",
259 	.def_trigger	= "",
260 };
261 
262 /* This is the blue LED on the device. Originally used to indicate GPS activity
263  * by flashing. */
264 
265 static struct gpiod_lookup_table n35_blue_led_gpio_table = {
266 	.dev_id = "s3c24xx_led.1",
267 	.table = {
268 		GPIO_LOOKUP("GPD", 8, NULL, GPIO_ACTIVE_HIGH),
269 		{ },
270 	},
271 };
272 
273 static struct s3c24xx_led_platdata n35_blue_led_pdata = {
274 	.name		= "blue_led",
275 	.def_trigger	= "",
276 };
277 
278 /* This LED is driven by the battery microcontroller, and is blinking
279  * red, blinking green or solid green when the battery is low,
280  * charging or full respectively.  By driving GPD9 low, it's possible
281  * to force the LED to blink red, so call that warning LED.  */
282 
283 static struct gpiod_lookup_table n30_warning_led_gpio_table = {
284 	.dev_id = "s3c24xx_led.2",
285 	.table = {
286 		GPIO_LOOKUP("GPD", 9, NULL, GPIO_ACTIVE_LOW),
287 		{ },
288 	},
289 };
290 
291 static struct s3c24xx_led_platdata n30_warning_led_pdata = {
292 	.name		= "warning_led",
293 	.def_trigger	= "",
294 };
295 
296 static struct gpiod_lookup_table n35_warning_led_gpio_table = {
297 	.dev_id = "s3c24xx_led.2",
298 	.table = {
299 		GPIO_LOOKUP("GPD", 9, NULL, GPIO_ACTIVE_LOW | GPIO_OPEN_DRAIN),
300 		{ },
301 	},
302 };
303 
304 static struct s3c24xx_led_platdata n35_warning_led_pdata = {
305 	.name		= "warning_led",
306 	.def_trigger	= "",
307 };
308 
309 static struct platform_device n30_blue_led = {
310 	.name		= "s3c24xx_led",
311 	.id		= 1,
312 	.dev		= {
313 		.platform_data	= &n30_blue_led_pdata,
314 	},
315 };
316 
317 static struct platform_device n35_blue_led = {
318 	.name		= "s3c24xx_led",
319 	.id		= 1,
320 	.dev		= {
321 		.platform_data	= &n35_blue_led_pdata,
322 	},
323 };
324 
325 static struct platform_device n30_warning_led = {
326 	.name		= "s3c24xx_led",
327 	.id		= 2,
328 	.dev		= {
329 		.platform_data	= &n30_warning_led_pdata,
330 	},
331 };
332 
333 static struct platform_device n35_warning_led = {
334 	.name		= "s3c24xx_led",
335 	.id		= 2,
336 	.dev		= {
337 		.platform_data	= &n35_warning_led_pdata,
338 	},
339 };
340 
341 static struct s3c2410fb_display n30_display __initdata = {
342 	.type		= S3C2410_LCDCON1_TFT,
343 	.width		= 240,
344 	.height		= 320,
345 	.pixclock	= 170000,
346 
347 	.xres		= 240,
348 	.yres		= 320,
349 	.bpp		= 16,
350 	.left_margin	= 3,
351 	.right_margin	= 40,
352 	.hsync_len	= 40,
353 	.upper_margin	= 2,
354 	.lower_margin	= 3,
355 	.vsync_len	= 2,
356 
357 	.lcdcon5 = S3C2410_LCDCON5_INVVLINE | S3C2410_LCDCON5_INVVFRAME,
358 };
359 
360 static struct s3c2410fb_mach_info n30_fb_info __initdata = {
361 	.displays	= &n30_display,
362 	.num_displays	= 1,
363 	.default_display = 0,
364 	.lpcsel		= 0x06,
365 };
366 
n30_sdi_set_power(unsigned char power_mode,unsigned short vdd)367 static void n30_sdi_set_power(unsigned char power_mode, unsigned short vdd)
368 {
369 	s3c24xx_mci_def_set_power(power_mode, vdd);
370 
371 	switch (power_mode) {
372 	case MMC_POWER_ON:
373 	case MMC_POWER_UP:
374 		gpio_set_value(S3C2410_GPG(4), 1);
375 		break;
376 	case MMC_POWER_OFF:
377 	default:
378 		gpio_set_value(S3C2410_GPG(4), 0);
379 		break;
380 	}
381 }
382 
383 static struct s3c24xx_mci_pdata n30_mci_cfg __initdata = {
384 	.ocr_avail	= MMC_VDD_32_33,
385 	.set_power	= n30_sdi_set_power,
386 };
387 
388 static struct gpiod_lookup_table n30_mci_gpio_table = {
389 	.dev_id = "s3c2410-sdi",
390 	.table = {
391 		/* Card detect S3C2410_GPF(1) */
392 		GPIO_LOOKUP("GPIOF", 1, "cd", GPIO_ACTIVE_LOW),
393 		/* Write protect S3C2410_GPG(10) */
394 		GPIO_LOOKUP("GPIOG", 10, "wp", GPIO_ACTIVE_LOW),
395 		{ },
396 		/* bus pins */
397 		GPIO_LOOKUP_IDX("GPIOE",  5, "bus", 0, GPIO_ACTIVE_HIGH),
398 		GPIO_LOOKUP_IDX("GPIOE",  6, "bus", 1, GPIO_ACTIVE_HIGH),
399 		GPIO_LOOKUP_IDX("GPIOE",  7, "bus", 2, GPIO_ACTIVE_HIGH),
400 		GPIO_LOOKUP_IDX("GPIOE",  8, "bus", 3, GPIO_ACTIVE_HIGH),
401 		GPIO_LOOKUP_IDX("GPIOE",  9, "bus", 4, GPIO_ACTIVE_HIGH),
402 		GPIO_LOOKUP_IDX("GPIOE", 10, "bus", 5, GPIO_ACTIVE_HIGH),
403 	},
404 };
405 
406 static struct platform_device *n30_devices[] __initdata = {
407 	&s3c_device_lcd,
408 	&s3c_device_wdt,
409 	&s3c_device_i2c0,
410 	&s3c_device_iis,
411 	&s3c_device_ohci,
412 	&s3c_device_rtc,
413 	&s3c_device_usbgadget,
414 	&s3c_device_sdi,
415 	&n30_button_device,
416 	&n30_blue_led,
417 	&n30_warning_led,
418 };
419 
420 static struct platform_device *n35_devices[] __initdata = {
421 	&s3c_device_lcd,
422 	&s3c_device_wdt,
423 	&s3c_device_i2c0,
424 	&s3c_device_iis,
425 	&s3c_device_rtc,
426 	&s3c_device_usbgadget,
427 	&s3c_device_sdi,
428 	&n35_button_device,
429 	&n35_blue_led,
430 	&n35_warning_led,
431 };
432 
433 static struct s3c2410_platform_i2c __initdata n30_i2ccfg = {
434 	.flags		= 0,
435 	.slave_addr	= 0x10,
436 	.frequency	= 10*1000,
437 };
438 
439 /* Lots of hardcoded stuff, but it sets up the hardware in a useful
440  * state so that we can boot Linux directly from flash. */
n30_hwinit(void)441 static void __init n30_hwinit(void)
442 {
443 	/* GPA0-11 special functions -- unknown what they do
444 	 * GPA12 N30 special function -- unknown what it does
445 	 *       N35/PiN output -- unknown what it does
446 	 *
447 	 * A12 is nGCS1 on the N30 and an output on the N35/PiN.  I
448 	 * don't think it does anything useful on the N30, so I ought
449 	 * to make it an output there too since it always driven to 0
450 	 * as far as I can tell. */
451 	if (machine_is_n30())
452 		__raw_writel(0x007fffff, S3C2410_GPACON);
453 	if (machine_is_n35())
454 		__raw_writel(0x007fefff, S3C2410_GPACON);
455 	__raw_writel(0x00000000, S3C2410_GPADAT);
456 
457 	/* GPB0 TOUT0 backlight level
458 	 * GPB1 output 1=backlight on
459 	 * GPB2 output IrDA enable 0=transceiver enabled, 1=disabled
460 	 * GPB3 output USB D+ pull up 0=disabled, 1=enabled
461 	 * GPB4 N30 output -- unknown function
462 	 *      N30/PiN GPS control 0=GPS enabled, 1=GPS disabled
463 	 * GPB5 output -- unknown function
464 	 * GPB6 input -- unknown function
465 	 * GPB7 output -- unknown function
466 	 * GPB8 output -- probably LCD driver enable
467 	 * GPB9 output -- probably LCD VSYNC driver enable
468 	 * GPB10 output -- probably LCD HSYNC driver enable
469 	 */
470 	__raw_writel(0x00154556, S3C2410_GPBCON);
471 	__raw_writel(0x00000750, S3C2410_GPBDAT);
472 	__raw_writel(0x00000073, S3C2410_GPBUP);
473 
474 	/* GPC0 input RS232 DCD/DSR/RI
475 	 * GPC1 LCD
476 	 * GPC2 output RS232 DTR?
477 	 * GPC3 input RS232 DCD/DSR/RI
478 	 * GPC4 LCD
479 	 * GPC5 output 0=NAND write enabled, 1=NAND write protect
480 	 * GPC6 input -- unknown function
481 	 * GPC7 input charger status 0=charger connected
482 	 *      this input can be triggered by power on the USB device
483 	 *      port too, but will go back to disconnected soon after.
484 	 * GPC8 N30/N35 output -- unknown function, always driven to 1
485 	 *      PiN input -- unknown function, always read as 1
486 	 *      Make it an input with a pull up for all models.
487 	 * GPC9-15 LCD
488 	 */
489 	__raw_writel(0xaaa80618, S3C2410_GPCCON);
490 	__raw_writel(0x0000014c, S3C2410_GPCDAT);
491 	__raw_writel(0x0000fef2, S3C2410_GPCUP);
492 
493 	/* GPD0 input -- unknown function
494 	 * GPD1-D7 LCD
495 	 * GPD8 N30 output -- unknown function
496 	 *      N35/PiN output 1=GPS LED on
497 	 * GPD9 output 0=power led blinks red, 1=normal power led function
498 	 * GPD10 output -- unknown function
499 	 * GPD11-15 LCD drivers
500 	 */
501 	__raw_writel(0xaa95aaa4, S3C2410_GPDCON);
502 	__raw_writel(0x00000601, S3C2410_GPDDAT);
503 	__raw_writel(0x0000fbfe, S3C2410_GPDUP);
504 
505 	/* GPE0-4 I2S audio bus
506 	 * GPE5-10 SD/MMC bus
507 	 * E11-13 outputs -- unknown function, probably power management
508 	 * E14-15 I2C bus connected to the battery controller
509 	 */
510 	__raw_writel(0xa56aaaaa, S3C2410_GPECON);
511 	__raw_writel(0x0000efc5, S3C2410_GPEDAT);
512 	__raw_writel(0x0000f81f, S3C2410_GPEUP);
513 
514 	/* GPF0  input 0=power button pressed
515 	 * GPF1  input SD/MMC switch 0=card present
516 	 * GPF2  N30 1=reset button pressed (inverted compared to the rest)
517 	 *	 N35/PiN 0=reset button pressed
518 	 * GPF3  N30/PiN input -- unknown function
519 	 *       N35 input GPS antenna position, 0=antenna closed, 1=open
520 	 * GPF4  input 0=button 4 pressed
521 	 * GPF5  input 0=button 3 pressed
522 	 * GPF6  input 0=button 2 pressed
523 	 * GPF7  input 0=button 1 pressed
524 	 */
525 	__raw_writel(0x0000aaaa, S3C2410_GPFCON);
526 	__raw_writel(0x00000000, S3C2410_GPFDAT);
527 	__raw_writel(0x000000ff, S3C2410_GPFUP);
528 
529 	/* GPG0  input RS232 DCD/DSR/RI
530 	 * GPG1  input 1=USB gadget port has power from a host
531 	 * GPG2  N30 input -- unknown function
532 	 *       N35/PiN input 0=headphones plugged in, 1=not plugged in
533 	 * GPG3  N30 output -- unknown function
534 	 *       N35/PiN input with unknown function
535 	 * GPG4  N30 output 0=MMC enabled, 1=MMC disabled
536 	 * GPG5  N30 output 0=BlueTooth chip disabled, 1=enabled
537 	 *       N35/PiN input joystick right
538 	 * GPG6  N30 output 0=blue led on, 1=off
539 	 *       N35/PiN input joystick left
540 	 * GPG7  input 0=thumbwheel pressed
541 	 * GPG8  input 0=thumbwheel down
542 	 * GPG9  input 0=thumbwheel up
543 	 * GPG10 input SD/MMC write protect switch
544 	 * GPG11 N30 input -- unknown function
545 	 *       N35 output 0=GPS antenna powered, 1=not powered
546 	 *       PiN output -- unknown function
547 	 * GPG12-15 touch screen functions
548 	 *
549 	 * The pullups differ between the models, so enable all
550 	 * pullups that are enabled on any of the models.
551 	 */
552 	if (machine_is_n30())
553 		__raw_writel(0xff0a956a, S3C2410_GPGCON);
554 	if (machine_is_n35())
555 		__raw_writel(0xff4aa92a, S3C2410_GPGCON);
556 	__raw_writel(0x0000e800, S3C2410_GPGDAT);
557 	__raw_writel(0x0000f86f, S3C2410_GPGUP);
558 
559 	/* GPH0/1/2/3 RS232 serial port
560 	 * GPH4/5 IrDA serial port
561 	 * GPH6/7  N30 BlueTooth serial port
562 	 *         N35/PiN GPS receiver
563 	 * GPH8 input -- unknown function
564 	 * GPH9 CLKOUT0 HCLK -- unknown use
565 	 * GPH10 CLKOUT1 FCLK -- unknown use
566 	 *
567 	 * The pull ups for H6/H7 are enabled on N30 but not on the
568 	 * N35/PiN.  I suppose is useful for a budget model of the N30
569 	 * with no bluetooth.  It doesn't hurt to have the pull ups
570 	 * enabled on the N35, so leave them enabled for all models.
571 	 */
572 	__raw_writel(0x0028aaaa, S3C2410_GPHCON);
573 	__raw_writel(0x000005ef, S3C2410_GPHDAT);
574 	__raw_writel(0x0000063f, S3C2410_GPHUP);
575 }
576 
n30_map_io(void)577 static void __init n30_map_io(void)
578 {
579 	s3c24xx_init_io(n30_iodesc, ARRAY_SIZE(n30_iodesc));
580 	n30_hwinit();
581 	s3c24xx_init_uarts(n30_uartcfgs, ARRAY_SIZE(n30_uartcfgs));
582 	s3c24xx_set_timer_source(S3C24XX_PWM3, S3C24XX_PWM4);
583 }
584 
n30_init_time(void)585 static void __init n30_init_time(void)
586 {
587 	s3c2410_init_clocks(12000000);
588 	s3c24xx_timer_init();
589 }
590 
591 /* GPB3 is the line that controls the pull-up for the USB D+ line */
592 
n30_init(void)593 static void __init n30_init(void)
594 {
595 	WARN_ON(gpio_request(S3C2410_GPG(4), "mmc power"));
596 
597 	s3c24xx_fb_set_platdata(&n30_fb_info);
598 	s3c24xx_udc_set_platdata(&n30_udc_cfg);
599 	gpiod_add_lookup_table(&n30_mci_gpio_table);
600 	s3c24xx_mci_set_platdata(&n30_mci_cfg);
601 	s3c_i2c0_set_platdata(&n30_i2ccfg);
602 
603 	/* Turn off suspend on both USB ports, and switch the
604 	 * selectable USB port to USB device mode. */
605 
606 	s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
607 			      S3C2410_MISCCR_USBSUSPND0 |
608 			      S3C2410_MISCCR_USBSUSPND1, 0x0);
609 
610 	/* Configure the I2S pins (GPE0...GPE4) in correct mode */
611 	s3c_gpio_cfgall_range(S3C2410_GPE(0), 5, S3C_GPIO_SFN(2),
612 			      S3C_GPIO_PULL_NONE);
613 
614 	if (machine_is_n30()) {
615 		/* Turn off suspend on both USB ports, and switch the
616 		 * selectable USB port to USB device mode. */
617 		s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
618 				      S3C2410_MISCCR_USBSUSPND0 |
619 				      S3C2410_MISCCR_USBSUSPND1, 0x0);
620 
621 		/* Disable pull-up and add GPIO tables */
622 		s3c_gpio_setpull(S3C2410_GPG(6), S3C_GPIO_PULL_NONE);
623 		s3c_gpio_setpull(S3C2410_GPD(9), S3C_GPIO_PULL_NONE);
624 		gpiod_add_lookup_table(&n30_blue_led_gpio_table);
625 		gpiod_add_lookup_table(&n30_warning_led_gpio_table);
626 
627 		platform_add_devices(n30_devices, ARRAY_SIZE(n30_devices));
628 	}
629 
630 	if (machine_is_n35()) {
631 		/* Turn off suspend and switch the selectable USB port
632 		 * to USB device mode.  Turn on suspend for the host
633 		 * port since it is not connected on the N35.
634 		 *
635 		 * Actually, the host port is available at some pads
636 		 * on the back of the device, so it would actually be
637 		 * possible to add a USB device inside the N35 if you
638 		 * are willing to do some hardware modifications. */
639 		s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
640 				      S3C2410_MISCCR_USBSUSPND0 |
641 				      S3C2410_MISCCR_USBSUSPND1,
642 				      S3C2410_MISCCR_USBSUSPND0);
643 
644 		/* Disable pull-up and add GPIO tables */
645 		s3c_gpio_setpull(S3C2410_GPD(8), S3C_GPIO_PULL_NONE);
646 		s3c_gpio_setpull(S3C2410_GPD(9), S3C_GPIO_PULL_NONE);
647 		gpiod_add_lookup_table(&n35_blue_led_gpio_table);
648 		gpiod_add_lookup_table(&n35_warning_led_gpio_table);
649 
650 		platform_add_devices(n35_devices, ARRAY_SIZE(n35_devices));
651 	}
652 }
653 
654 MACHINE_START(N30, "Acer-N30")
655 	/* Maintainer: Christer Weinigel <christer@weinigel.se>,
656 				Ben Dooks <ben-linux@fluff.org>
657 	*/
658 	.atag_offset	= 0x100,
659 	.init_time	= n30_init_time,
660 	.init_machine	= n30_init,
661 	.init_irq	= s3c2410_init_irq,
662 	.map_io		= n30_map_io,
663 MACHINE_END
664 
665 MACHINE_START(N35, "Acer-N35")
666 	/* Maintainer: Christer Weinigel <christer@weinigel.se>
667 	*/
668 	.atag_offset	= 0x100,
669 	.init_time	= n30_init_time,
670 	.init_machine	= n30_init,
671 	.init_irq	= s3c2410_init_irq,
672 	.map_io		= n30_map_io,
673 MACHINE_END
674